Omron SYSMAC C Series User Manual page 94

Instruction words
Explanation
Nothing is executed when the content of the result register is logical 0.
When the content of the result register is logical 1, transfer of data or of
inverted data is performed.
I/O relay Holding relay Holding relay
10CH HRSCH HROCH
The result of the transfer will be:
HR9CH = 0-> 1906 = 1
(HRO) # 0— 1906 =0
In constant designation, hexadecimal four-digit (binary 16-bit) data is
either transferred or inverted and then transferred.
B-19